Interesting Video Finds Part 4

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Very cool. This is why we have NIST in the US. It's also why plastic rulers (and plastic slide rules from back in the day) can't always be trusted for high precision measurements. There's too much thermal expansion/contraction going on.

Having one constructed of composite would’ve been helpful while building mom’s deck this summer.

I purposefully cut and fastened the Trex decking when the temperature was in the 60s. Figured that is our median year round temperature.
 

DRW

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I had a teacher that didn’t like students using the word ruler. I remember him holding one up to the class and proclaiming it wasn’t a king of anything. We were instructed to refer to them as a straightedge.

It’s funny the things one remembers from their youth.
Similar experience but 'scale' was the term we were instructed to use. Straightedges were not marked for measurements.
 
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Monocrom

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A little something from my girl, Karlie. Known her for years.
She's like a little sister to me. Love encouraging her to post content on her channel. Maybe one day, she and her brother will be internet famous.... like their dad. Seriously, he pulled off a hula-hoop trick and the youngins' on Tik-Tok were amazed and mesmerized by it! So many views. Anyway, enjoy the Performance Art.
 

IMA SOL MAN

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A little something from my girl, Karlie. Known her for years.
She's like a little sister to me. Love encouraging her to post content on her channel. Maybe one day, she and her brother will be internet famous.... like their dad. Seriously, he pulled off a hula-hoop trick and the youngins' on Tik-Tok were amazed and mesmerized by it! So many views. Anyway, enjoy the Performance Art.

A fire bug's dream and a firefighter's nightmare.
 

Monocrom

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So, apparently the latest internet/social media trend is to ask men how often they think about.... The Roman empire. Well, one woman messed around and got an answer she sure as heck wasn't expecting....

 

PhotonWrangler

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Another good one. The telegraph systems used to rely on selenium rectifiers. They discovered that the telegraphs would sometimes chatter during daylight hours, and it was traced to these rectifiers. Selenium is photovoltaic just like silicon and would produce current when it was exposed to sunlight. They wound up having to cover or paint the rectifier plates to stop this from happening. And from this discovery the selenium solar cell was born.
 

PhotonWrangler

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I stumbled across this one today. It's a recording of 'whistlers," radio signals that are produced by lightning strikes that bounce around in the earth's magnetic field and get pitch-shifted as this happens. If you have a radio that can pick up longwave signals below 500khz, you can hear these yourself.

 
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Monocrom

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There's one little problem with that film.... Spielberg hired a bunch of the Jewish people as consultants on the film. Those who knew the real Schindler. Those he protected. Every single one of them walked out during filming, in disgust. Every single one hated Spielberg's revisionist history of what took place near the end of the war.

Schindler, towards the end of the war but before he realized it was nearing its end, came to a drastic conclusion. He realized he couldn't continue to protect all of the people whom he had been, up until that point. So.... He became a gun-runner. That's right. Had weapons illegally sent in, distributed them to the individuals under his protection, made sure they knew how to use them! And, it wasn't a one-time thing either. Multiple illegal shipments. He gave each of them the means to effectively protect themselves.

Now, it's well-known that Spielberg is a huge gun collector. Charlton Heston outed him before he passed away. Spielberg is also a raging hypocrite. He doesn't think people should own guns, and is a rabid gun-control advocate to an extreme degree. He despised the fact that Reality didn't fit into his preconceived notions regarding Schindler. So, he simply left that vital part of the story out of his film.

Enraging all of the elderly Jewish consultants whom he hired. All of the ones who were there during war, and who survived thanks to the illegal arms and training they were provided with. All thanks to Schindler. They all walked out. Not one returned. Spielberg finished the film without them. But as usual, you don't get the truth from the mass media.
 

Dave_H

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Might have mentioned it before: "The Light Bulb Conspiracy" is a good documentary on planned obsolescence. It mentions in detail controls on incandescent bulb life limit to 1000 hours, going back a century. How this works with LED bulbs is not mentioned, they were fairly new back in 2010, a lot has happened since then.

Dave
 
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